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WASHINGTON – The U.S. Food and Drug Administration issued a short opinion on Tuesday in which it spoke positively of Moderna’s Covid-19 vaccine ahead of an expert meeting on its emergency approval.
The agency’s statement was upbeat, saying “there are no specific safety concerns preventing the urgent issuance of a use license,” and confirmed the overall effectiveness of the vaccine at 94.1%.
If approved, the Moderna vaccine will join the Pfizer / Bionic vaccine in America’s vaccination campaign, the largest in U.S. history.
It used to be the case that the vaccine consisted mainly of weak or inactivated viruses or parts of the virus that do not cause disease to the body, but only inform you of the disease and stimulate it to produce antibodies that remain inside it for life and defend against it. viruses in the future.
The Moderna vaccine takes a different approach, consisting of small pieces of DNA that stimulate the body to produce the protein on the surface of the emerging corona virus.
It is this protein, which gives the Corona virus its distinctive coronavirus form, that helps the microorganism adhere to human cells in the early stages of the disease.
Once this foreign protein is produced in the body, the immune system senses the presence of the virus and begins to produce the antibody, as if the person is already sick.
This method is similar to the way the recently announced Pfizer and Biontech vaccines work.
Both vaccines require two injections, several weeks apart.
One of the main advantages of the Moderna vaccine is that it does not need to be stored in extremely cold temperatures like the Pfizer vaccine, which makes it easy to distribute.
Moderna expects the vaccine to be stable at normal refrigerant temperatures of 2 to 8 degrees Celsius for 30 days and can be stored for up to six months at minus 20 degrees Celsius.
In return, the Firees vaccine must be shipped and stored at minus 70 degrees Celsius, which is the normal temperature in the Antarctic winter. At normal coolant temperatures, it can be stored for up to five days.
